Stop motion for looms



May 11 ,41926. 1,584,457

L. P. LANDRY STOP MOTION FOR LOOMS Filed Sept. 22, 1923 0 ATTORNEY,

INIVENTOR Patented May 11, 1926.

uairso LOUIS PHILIP LANDRY, or WOONSOCKET, nnonn ISLAND.

's'ror MOTION non nooivis.

Application filed September 22, 1923. Serial No. 664,291.

My present invention pertains to means for detecting broken loom harness operating connections and the actuating thereby of the loom stop motion. 1 v

In order to enable those skilled in the art to appreciate my improvements I deem it necessary before entering into a detail description of the invention to refer to certain elements (not illustrated) of a loom. By

1 reference to the construction of a loom and more; particularly to worsted looms it will be manifest that the harness is actuated by means of straps and other connections. These connections are secured to both the top and bottom of the harness; the ones at the top being to elevate and support the correspondlng parts in all the 'views of the harness in such position and the attachments at the bottom are to permit fall of the harness when they are released by the top connections. The lower connections, at certain points, are permitted to pass under rollers or the like whereby their direction of movement is changed to the horizontal from the perpendicular, and generally this direction is parallel with the lay and harness; intermediate these rollers and the actuating means, the connections are constructed of wire as indicated by 13 in Figure 1. Those conversant with looms are well aware of the fact that between the actuating means and the harness of the looms there are provided connections. I do not deem it necessary to illustrate a loom together with the harness but merely show the connections or r wires 13. During the operation of a loomit frequently happens that some portion of the harness operating connections will break causing the harness operated therefrom to remain inoperative. In view of the fact that the pattern of cloth on the loom is directly dependent upon the steady operation of each harness it is very evident that when the breakage takes place it is manifestly important that the loom be stoppedv The invention in all of its details will be fully understood from the following description and claims whenthe same are readin' and illustrated at right angles to the lay, harness, etc. of a loom.

Figure 3 is a sectional view showingin detail certain elements of the detecting Figure 2 is a view of the side of the device,

Similar numerals of reference designate drawings.

Secured to some convenient portion on the loom frame, for instance, on a crossbrace 3 is a bracket 2 which supports a vertical plate 5 and supported therefrom is a pin 7 that in turn receives a swinging lever 6, and supported by this leverv 6 is an arm 11 having the upstanding portion 12, and said arm 11 is preferablyofstiff wire or other comparatively light material and is adjustably secured in the lever 6 by means of a thumbscrew 10 or other suitable means that may suggest itself. The arm 11 is suspended so as to bear lightly upon each of the wires 13 that in turn are connected with the harness of a loom and in such a manner that when not held taut the wires 13 will bear against the arm 11.

As clearly shown in Figuresl and 2 a post 15 is attached to the plate 5 and this post is insulated therefrom at the point 17 by insulating material. This post is positioned to engage the arm 8 of. the lever 6 when same is operated upon by a supporting pin 7 which serves as a fulcrum if the harness breaks or the supports thereof get'out of place.

Any means may be employed to retain the lever 6 in a position as shown out of engagement with the post 15 such for instance the fiat spring 14 but in this connection, I would have it understood that the tension on the arm 8 is normally retained to keep it in the and supported in any approved manner and frame 3 that supports the'arm 1 and the arm 11 of the lever 6;.the circuit being completed when the lever 8 is operated so that the arm 8 forms the contact with; the post 15. l 1

The harnesses are connected to cords (not shown) at the top thereof, and these cords operate over pulleys that are secured to the top of the frame. The vertical cords 21 are and operate over pulleys 22 secured to the lower end of the frame. The "cords 21 terminate in the wires 13, hence if the cords 21 or the connections thereof break and'cause the harness to drop, the wires 13 will sag euthciently to operate the stop motion mechanisl The reason for the circular portion 4 is to protect the post'15 and arm-8 and prevent lint flying from the loom' lodging on same with the liability of causing fire. I

In the practical operation of the device,

when one of the harness'operating connecprovided with electrically operated shipping mechanism'to cause stopping of the loom.

It will be manifest from the foregoing, that the invention is simple in operation and inexpensve to produce and comprises no delicate parts such as are'liable to become inoperative after a short period of use.

a The deviceis positive in. operation and may be easily installed on looms at present in use and-assures. not only great saving in harness mechanism but also reduces the liability, of weaving cloth or the like in an imperfect manner and thus necessitate the discarding'of a large amount of the finished product because of its lmperfect condition. "connectedto the lower end of the harnesses The connecting wires 13 bear on the arm 11 and run from the harness to the actuatmecha-nism of a loom and manifestly if any of the elements arranged 111 communication with the harness or the harness itselfbreaks or otherwise get out of position,

the harness will sag causing itscomplementary w1re'13 to sag which in turn will bear down on thewire thereby" forcing same against the arm.

loom, and intermediate the harness and actuating mechanlsm of the loom a bracket secured to the loom frame and having a hoodshaped portion formed at oneend thereof, a plate formed integral on the bracket, a post 7 arranged on the plate, a tension arm mounted onthe plate withinthe hood-shaped portion, an arm that rests below the wires and ssecured to the tension arm whereby movement of the tension arm Wlll close a clrcuit post and shiphereunto set LOUIS PHILIP LANDRY. 

